Windy Belle and Harmony © me
Tank and Angel Bunny (My Little Pony) © Hasbro
1. Definitely a heart-warming scene you have depicted here. Myself, I have tried to spend what scant free time I have with my own girls, some of which was/is reading to them (everything from classic fairy tales to mythology to modern fantasy). Never under-value the act of simply being there for your child, even if only to tell them a story or read them one; because once the time you have to do it is past, what could have been a heart-warming memory withers into unchangable regret.
2. I see you took my advice and have made both pegasus daughters' hair colorings go all the way down to the roots, rather than partial colorings. This is a definite improvement and looks far more appropriate for the two hybrid daughters who are supposed to be direct blood relations to their respective Element parents.
3. I also see you have developed Windy Belle's Cutie Mark (as well as for Apple Syrup and Star Chaser, in other fan-artworks). I look forward to seeing what Cutie Mark you come up with for Harmony; perhaps something subtly ironic to the Elements of Harmony, or to the Tree of Harmony.
4. A really good artistic detail here is how you have Harmony mimicking Windy Belle's storytelling pose, it adds another level to the heart-warming & reinforcing theme of "sisters" to the fan-artwork. It is small & subtle details like that, that make a work like this far better than its initial face-value.